In a blender or food processor, puree the rehydrated chiles de árbol, garlic, vinegar, water Mexican oregano, cumin, pepper, cloves, and salt. (Strain if you want a very smooth sauce.) Pour the sauce over the sandwiches. Garnish the sandwiches with the sliced radishes and pickled onions and serve with lime wedges. Eat these tortas with a fork and lots of napkins.